FILE - In this Dec. 27, 2015, file photo, Cleveland Browns quarterback Johnny Manziel (2) throws during the first half of an NFL football game against the Kansas City Chiefs in Kansas City, Mo. The Browns are not commenting on a report that Manziel went to Las Vegas on the day before the season finale. (AP Photo/Ed Zurga, File)

A formal announcement is expected Monday, a source tells WFAA. He is expected to be charged with misdemeanor assault.

Police said they had completed their investigation into a Jan. 30 incident in which the 2012 Heisman Trophy winner’s ex-girlfriend, Colleen Crowley, alleged he attacked her. Manziel has not been arrested.

Crowley has alleged that the former Texas A&M star accosted her several times at a Dallas hotel, then later struck her when they drove back to her apartment in Fort Worth.

She said she tried to escape a car Manziel was driving, but that he dragged her back into the vehicle. She says Manziel hit her so hard that she temporarily lost hearing in one ear.